Smart Fortwo 451 Clutch Actuator Replacement & Relearning — P0900 P0805 Fixed

P0900 & P0805 — Smart Fortwo 451 clutch actuator failed completely (open circuit, no plunger movement). Full step-by-step replacement and adaptation procedure, filmed start to finish. In this video: ✅ Diagnosing a seized/open-circuit clutch actuator on a bench test ✅ Correct graduation mark alignment during actuator fitment (critical step most techs miss) ✅ Torque spec: mounting screws tightened to 10Nm in the correct sequence ✅ Full scanner-guided clutch relearning/adaptation procedure (Smart 451, MHD) ✅ What to do if the final learning step won't complete — the "move the car 50m and restart" trick ✅ Real average clutch drag point results after successful relearning Vehicle: Smart Fortwo W451 (2007–2015 UK production range) If your Smart 451 clutch feels like it's stuck engaged, won't disengage, or throws P0900/P0805, this walkthrough shows the full fix. 👍 Like, subscribe, and comment if this saved you a trip to the dealer. #SmartFortwo #ClutchActuator #P0900 #P0805 #Smart451 Disclaimer: This video is for educational and informational purposes only. Always follow manufacturer procedures and safety guidelines. Consult a qualified technician before attempting any repair on your vehicle. #SmartFortwo #Smart451 #ClutchActuator #P0900 #P0805 #ClutchReplacement #MHD #CarDiagnostics #AutoRepair #IndependentGarage #WorkshopLife #CarMechanic #DIYAutoRepair #TransmissionRepair #ScanTool